where \(C \equiv M/R\)  is the compactness of the star and \(k_2\)  is the tidal
Love number, which is given by [1]}, [2]}, [3]}
\(k_{2} & = & \frac{8C^{5}}{5} \left(1-2C\right)^{2} \left[2+2C\left(y-1\right)-y\right] \left\lbrace  2C \left[6-3y+3C\left(5y-8\right)\right]\right. \nonumber \\& &\quad +4C^{3}\left[13-11y+C\left(3y-2\right)+2C^{2}\left(1+y\right)\right] \nonumber \\& &\quad \left.+3\left(1-2C\right)^{2}\left[2-y+2C\left(y-1\right)\right]\ln \left(1-2C\right)\right\rbrace ^{-1}, \) 
